//
// Created by light on 20-1-10.
//

#include <iostream>

class test3 {
public:
  int value;

  // constexpr const method - can't chanage the values of object fields and can
  // be evaluated at compile time.
  constexpr int getvalue() const { return (value); }

  constexpr test3(int Value) : value(Value) {}
};

int main() {

  // 加不加都行
  constexpr test3 x(100); // OK. Constructor is constexpr.

  int array[x.getvalue()]; // OK. x.getvalue() is constexpr and can be evaluated
                           // at compile time.
}
